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A song of fire and ice in the oceanCyclic changes in the tilt of the Earth's axis and the eccentricity of its orbit have left their mark on hills deep under the ocean, a study published in Science has found.http://phys.org/news342777031.html
EarthTue, 10 Feb 2015 08:00:02 ESTnews342777031Past climate change and continental ice melt linked to varying CO2 levelsScientists at the Universities of Southampton and Cardiff have discovered that a globally warm period in Earth's geological past featured highly variable levels of CO2.http://phys.org/news332519803.html
EarthTue, 14 Oct 2014 20:20:01 ESTnews332519803Study provides new look at ancient coastline, pathway for early AmericansThe first humans who ventured into North America crossed a land bridge from Asia that is now submerged beneath the Bering Sea, and then may have traveled down the West Coast to occupy sites in Oregon and elsewhere as long as 14,000 to 15,000 years ago.http://phys.org/news328341297.html
Other SciencesWed, 27 Aug 2014 06:55:07 ESTnews328341297Late Cretaceous Period was likely ice-freeFor years, scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today. Now, a University of Missouri researcher has found evidence suggesting that no ice sheet formed at this time. This finding could help environmentalists and scientists predict what the earth's climate will be as carbon dioxide levels continue to rise.http://phys.org/news299258421.html
EarthTue, 24 Sep 2013 16:20:30 ESTnews299258421Heat flow from Earth's mantle contributes to Greenland ice meltingThe Greenland ice sheet is melting from below, caused by a high heat flow from the mantle into the lithosphere. This influence is very variable spatially and has its origin in an exceptionally thin lithosphere. Consequently, there is an increased heat flow from the mantle and a complex interplay between this geothermal heating and the Greenland ice sheet. The international research initiative IceGeoHeat led by the GFZ German Research Centre for Geosciences establishes in the current online issue of Nature Geoscience (Vol 6, August 11, 2013) that this effect cannot be neglected when modeling the ice sheet as part of a climate study.http://phys.org/news295334176.html
EarthSun, 11 Aug 2013 13:00:21 ESTnews295334176Ice ages only thanks to feedbackIce ages and warm periods have alternated fairly regularly in the Earth's history: the Earth's climate cools roughly every 100,000 years, with vast areas of North America, Europe and Asia being buried under thick ice sheets. Eventually, the pendulum swings back: it gets warmer and the ice masses melt. While geologists and climate physicists found solid evidence of this 100,000-year cycle in glacial moraines, marine sediments and arctic ice, until now they were unable to find a plausible explanation for it.http://phys.org/news295101717.html
EarthWed, 07 Aug 2013 13:42:12 ESTnews295101717Ice-free Arctic may be in our future, says researchAnalyses of the longest continental sediment core ever collected in the Arctic, recently completed by an international team led by Julie Brigham-Grette of the University of Massachusetts Amherst, provide "absolutely new knowledge" of Arctic climate from 2.2 to 3.6 million years ago.http://phys.org/news287314821.html
EarthThu, 09 May 2013 14:00:01 ESTnews287314821'A better path' toward projecting, planning for rising seas on a warmer EarthMore useful projections of sea level are possible despite substantial uncertainty about the future behavior of massive ice sheets, according to Princeton University researchers.http://phys.org/news284216109.html
EarthWed, 03 Apr 2013 13:55:25 ESTnews284216109